The answer to the first is December 1st, and to the second is $59.99 USD / €59,99.
The set will consist of The Blue Box, which can be opened up and connected to a reproduction of the T.A.R.D.I.S. control room with console. LEGO is including two Doctors: 11th (Matt Smith, avec fez) and 12th (Peter Capaldi, with Sonic). Clara Oswald is along for the ride and all will have to contend with both a Weeping Angel and not one but two Daleks! EX-TER-MINATE!
The official product release information follows:
Construct a stunningly detailed LEGO® version of the iconic TARDIS® and role-play the Doctor’s time-travel adventures! Created by fan-designer Andrew Clark and selected by LEGO Ideas members, this set is based on the BBC’s popular and long-running television series about a Time Lord – the Doctor – exploring the universe in a blue police box. Due to trans-dimensional engineering, the TARDIS is bigger on the inside than the outside and this cool multifunctional set includes the console room that houses all the flight controls. Regenerate the Doctor and defeat the evil Daleks™ and a Weeping Angel with the help of his extraordinary companion Clara. Then close the doors of the TARDIS and launch into another dimension! Includes 4 minifigures with assorted accessory elements: the Eleventh Doctor, the Twelfth Doctor, Clara Oswald and a Weeping Angel, plus 2 Daleks™.
Additional photos of the set can be found on the LEGO Ideas website.
Doctor Who is also one of the many universes included in LEGO’s Dimensions Toy To Life videogame, and a couple of expansion packs will be appearing in the near future. First, a “level pack” that includes the 12th Doctor, K-9, and a mini TARDIS, probably released by Christmas 2015. Second, a smaller “fun pack” with a Cyberman and a Dalek, coming in early 2016. The level pack is pricey because it actually unlocks a whole new level within the Dimensions game.
I’m sure this new Ideas set and the Dimensions packs are only the beginning of a long and fruitful relationship between LEGO and Doctor Who.